package wang.suanfang;

public class Test001 {
    public static void main(String[] args) {

        Integer arr[] = {999999, 2};

        Integer a = arr[0];
        Integer b = arr[0];

        a = a ^ b;
        b = a ^ b;
        a = a ^ b;

        System.out.println(a);
        System.out.println(b);
    }
}
